a few years ago i had a barrel recut to copy a barrel i saw in a museum. the barrel had very narrow grooves and wide lands. i had a .45 cut this way with a 1-60 twist and it is 34 inches long. this barrel never is cranky it always shoots in the x . ive even done well at 170 yards by just shooting some higher. i shoot a little heavy for a .45 with 80 grains of 2f or even 80 grains of pyrodox. i use linen patches cut off at the muzzle with a .445 round ball. if you have knowledge or an opinion as to what part of all this makes it such a good barrel please jump in and tell us. i may want to duplicate this accracy in the future with other barrels and want opinions and input. thanks johnson1942